Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
8.3k views
in Mathematics by (52.5k points)

A box contains 10 red marbles, 20 blue marbles and 30 green marbles. 5 marbles are drawn from a box, what is probability that 

(i) all will be blue 

(ii) at least one will be green.

1 Answer

+1 vote
by (54.8k points)
selected by
 
Best answer

Total marbles  = 10 + 20 + 30 = 60

∴ 5 marbles can be drawn out of 60 in 60C5 ways. 

(i) 5 blue marbles out of 20 can be drawn in 20C5 ways.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...